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  1. Article: Secondary Metabolites from the Endoparasitic Nematophagous Fungus

    Dai, Zebao / Gan, Yang / Zhao, Peiji / Li, Guohong

    Microorganisms

    2022  Volume 10, Issue 8

    Abstract: Harposporium ... ...

    Abstract Harposporium anguillulae
    Language English
    Publishing date 2022-07-31
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms10081553
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Secondary Metabolites from the Endoparasitic Nematophagous Fungus Harposporium anguillulae YMF 1.01751

    Dai, Zebao / Gan, Yang / Zhao, Peiji / Li, Guohong

    Microorganisms. 2022 July 31, v. 10, no. 8

    2022  

    Abstract: Harposporium anguillulae, an endoparasitic nematophagous fungus (ENF), is a model fungus from which the genus Harposporium was established. It can infect nematodes via ingested conidia. In this paper, the morphology and nematode–fungus interaction ... ...

    Abstract Harposporium anguillulae, an endoparasitic nematophagous fungus (ENF), is a model fungus from which the genus Harposporium was established. It can infect nematodes via ingested conidia. In this paper, the morphology and nematode–fungus interaction between Panagrellus redivivus and H. anguillulae were observed by scanning electron microscopy (SEM). The secondary metabolites of H. anguillulae were also studied. Seven metabolites were purified and identified from an ethyl acetate extract of broth and a methanol extract of mycelium. These include a new polyketone 5-hydroxy-3-(hydroxymethyl)-6-methyl-2H-pyran-2-one (1) and six known metabolites (17R)-17-methylincisterol (2), eburicol (3), ergosterol peroxide (4), terpendole C (5), (3β,5α,9β,22E)-3,5-dihydroxy-ergosta-7,22-dien-6-one (6), and 5α,6β-epoxy-(22E,24R)-ergosta-8,22-diene- 3β,7α-diol (7). These metabolites were assayed for their activity against plant root-knot nematode, Meloidogyne incognita, and the results showed that terpendole C (5) had weak nematicidal activity but also that other compounds did not have evident activity at a concentration of 400 μg mL⁻¹. Compound 1 exhibited an attractive effect towards P. redivivus.
    Keywords Harposporium ; Meloidogyne incognita ; Panagrellus redivivus ; conidia ; electron microscopy ; ergosterol ; ethyl acetate ; methanol ; mycelium ; nematicidal properties ; nematophagous fungi ; root-knot nematodes ; secondary metabolites
    Language English
    Dates of publication 2022-0731
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms10081553
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Secondary Metabolites and Their Bioactivities Produced by

    Dai, Ze-Bao / Wang, Xin / Li, Guo-Hong

    Molecules (Basel, Switzerland)

    2020  Volume 25, Issue 21

    Abstract: ... ...

    Abstract Paecilomyces
    MeSH term(s) Antineoplastic Agents/chemistry ; Antineoplastic Agents/metabolism ; Antiparasitic Agents/chemistry ; Antiparasitic Agents/metabolism ; Enzyme Inhibitors/chemistry ; Enzyme Inhibitors/metabolism ; Herbicides/chemistry ; Herbicides/metabolism ; Insecticides/chemistry ; Insecticides/metabolism ; Paecilomyces/chemistry ; Paecilomyces/classification ; Paecilomyces/metabolism ; Secondary Metabolism
    Chemical Substances Antineoplastic Agents ; Antiparasitic Agents ; Enzyme Inhibitors ; Herbicides ; Insecticides
    Language English
    Publishing date 2020-11-01
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules25215077
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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  4. Article: Pathogenicity and Metabolites of Endoparasitic Nematophagous Fungus

    Wan, Juan / Dai, Zebao / Zhang, Keqin / Li, Guohong / Zhao, Peiji

    Microorganisms

    2021  Volume 9, Issue 8

    Abstract: Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF, ...

    Abstract Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF,
    Language English
    Publishing date 2021-08-14
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9081735
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Pathogenicity and Metabolites of Endoparasitic Nematophagous Fungus Drechmeria coniospora YMF1.01759 against Nematodes

    Wan, Juan / Dai, Zebao / Zhang, Keqin / Li, Guohong / Zhao, Peiji

    Microorganisms. 2021 Aug. 14, v. 9, no. 8

    2021  

    Abstract: Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF, Drechmeria coniospora ... ...

    Abstract Plant parasitic nematodes cause severe damage to crops. Endoparasitic nematophagous fungi (ENF) are a type of important biocontrol fungi, which can cause disease or kill nematodes by producing various spores. As a major ENF, Drechmeria coniospora displays certain potential for controlling plant-parasitic nematodes. In this study, the pathogenicity and secondary metabolites of the endoparasitic fungus D. coniospora YMF1.01759 were investigated. The strain D. coniospora YMF1.01759 had high infection efficiency against nematodes. The process of infecting nematodes by the strain was observed under an electron microscope. Here, 13 metabolites including one new compound 4(S)-butoxy-3-(butoxymethyl)-2-hydroxycyclopent-2-en-1-one (2) were isolated and identified from the fermentation products of D. coniospora YMF1.01759 cultured in a SDAY solid medium. Furthermore, a bioassay showed that 5-hydroxymethylfuran-2-carboxylic acid (1) is toxic to the root knot nematode Meloidogyne incognita and affects the hatching of its egg. Thereby, the nematicidal mortality attained 81.50% at 100 μg/mL for 48 h. Furthermore, egg hatching was inhibited at the tested concentrations, compared with water control eggs. This is the first report on the secondary metabolites of the ENF D. coniospora. The results indicated that D. coniospora could infect nematodes by spores and produce active metabolites to kill nematodes. The biological control potential of D. coniospora against nematodes was expounded further.
    Keywords Meloidogyne incognita ; bioassays ; biological control ; eggs ; fermentation ; mortality ; nematophagous fungi ; pathogenicity ; root-knot nematodes ; secondary metabolites ; toxicity
    Language English
    Dates of publication 2021-0814
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2720891-6
    ISSN 2076-2607
    ISSN 2076-2607
    DOI 10.3390/microorganisms9081735
    Database NAL-Catalogue (AGRICOLA)

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    Kategorien

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